EP4063026A2 - Application device - Google Patents
Application device Download PDFInfo
- Publication number
- EP4063026A2 EP4063026A2 EP22159325.4A EP22159325A EP4063026A2 EP 4063026 A2 EP4063026 A2 EP 4063026A2 EP 22159325 A EP22159325 A EP 22159325A EP 4063026 A2 EP4063026 A2 EP 4063026A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- application
- base body
- heads
- application device
- fastening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004831 Hot glue Substances 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
- B05C5/0275—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
- B05C5/0279—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
Definitions
- the invention relates to an application device for applying a viscous medium, in particular hot-melt adhesive, to a substrate, and comprises a base body and several application heads, which are arranged in a row next to one another along a transverse axis of the application device and are attached to the base body.
- a viscous medium in particular hot-melt adhesive
- Such an application device is, for example, from DE 10 2013 101 637 A1 known.
- Application devices of this type are used in particular for an intermittent application of the medium in the form of dots or beads onto the substrate, for example in the form of a web material, which is guided past the application device.
- the application device described there has a large number of application heads, each of which includes a housing.
- the housings each have a nozzle chamber with a feed channel and an outlet nozzle for the viscous medium.
- a nozzle needle is provided, which passes through the nozzle chamber and the tip of which rests on a nozzle needle seat of the outlet nozzle in order to close it.
- the nozzle needle can be displaced axially along an adjustment axis by means of an actuating device in order to open and close the outlet nozzle.
- the housing has a cylinder chamber in which a piston is guided in an axially displaceable manner.
- This piston-cylinder unit is designed as a double-acting pneumatic actuating cylinder and is part of the actuating device for adjusting the nozzle needle.
- the housing has a rectangular outer profile transversely to the adjustment axis, so that a plurality of application heads can be arranged next to one another in a simple manner, it being possible for the application heads to bear against one another with the side surfaces of the housing.
- Two screws are provided to fasten the individual application heads, which are guided in the direction of the transverse axis on both sides of the cylinder chamber through fastening openings in the housing and are screwed into threaded holes in the base body.
- the screws are supported on a side facing away from the base body with a screw head against the housing in order to clamp it against the base body.
- the distance between the application nozzles of the individual application heads is determined on the one hand by the width of the piston or the width of the cylinder chamber in the direction of the transverse axis. On the other hand, the distance between the application nozzles is determined by the thickness of the screws or the screw heads for fastening the application heads.
- the sizes of the effective piston surfaces of the piston and thus the width of the cylinder chambers are structurally specified for the forces required to close the outlet nozzle by means of the nozzle needle.
- the nozzle needle must be moved quickly, in particular when dots of the viscous medium are applied intermittently at short intervals, which means that large actuation forces are required.
- the piston surface has a longitudinal extension in the direction of a longitudinal axis, which is greater than a width extension in the direction of a transverse axis arranged transversely to the longitudinal axis.
- this requires a complex production of the cylinder bores and pistons.
- the object of the present invention is to provide an application device in which the distance between outlet nozzles of application heads arranged next to one another can be reduced in a simple manner.
- an application device for applying a viscous medium, in particular hot-melt adhesive, to a substrate, which comprises a base body and a plurality of application heads, which are arranged in a row next to one another along a transverse axis of the application device and are attached to the base body.
- the application heads each have at least one recess which, together with a recess in an adjacent application head, forms a fastening opening.
- a bolt is seated in each of the fastening apertures, which is fastened to the base body and is supported on a side of the application heads facing away from the base body against both application heads forming the respective fastening aperture.
- At least one of the bolts can be designed as a screw which is screwed into a threaded hole in the base body and has a screw head with which the screw is supported against the application heads on a side facing away from the base body. Each screw is thus axially supported with the screw head against the two applicator heads, which together form the fastening opening in which the screw sits.
- the bolt is a threaded bolt which is screwed into a threaded hole in the base body and carries a nut on the side facing away from the base body, which is supported axially against the applicator heads.
- the threaded bolt can also be firmly connected to the base body, for example with a material fit by welding, soldering, gluing or the like.
- the recesses can each be formed in a side surface of the housing of the application heads.
- Each two application heads arranged side by side can have mutually facing side walls, which can also be in contact with each other, the Recesses are arranged in the side walls facing one another.
- the recesses can each be formed as a groove in one of the side surfaces of one of the application heads, with the groove being open towards an adjacent application head.
- the mutually facing grooves of adjacent application heads thus together form a continuous channel-like opening.
- the individual grooves can have any desired cross-section, for example in the form of a segment of a circle, a semi-circle or in the form of a polygon, such as triangular or rectangular.
- the application heads can each have two recesses facing away from one another, so that they each form a fastening opening with a recess of an adjacent application head.
- the application heads can thus be made narrower on two sides.
- the fastening openings can be designed in a cylindrical manner.
- the recesses can each be designed in the shape of a semi-cylinder for this purpose. It is also conceivable that the cross-section of the recesses has the shape of a segment of a circle, other than a semicircle, with those recesses that together form a fastening aperture being configured in cross-section in such a way that the cross-sections in the shape of a segment of a circle together form a circular cross-section.
- the application heads can each have a fastening surface with which the application heads are held in contact with the base body.
- the base body can be heated, so that the contact between the attachment surface and the base body ensures heat transfer from the base body to the application head.
- the application device can further comprise end modules which are attached to the base body at the ends of the row of application heads.
- the end modules can each have a recess which forms a fastening opening with one of the recesses of the respectively adjacent application head.
- the end modules can each also be attached to the base body.
- they can have a mounting hole in which a mounting screw sits, which is screwed into a threaded hole on the base body.
- a fastening bolt in the form of a threaded bolt is provided, which is screwed into a threaded hole in the base body and carries a nut on the side facing away from the base body, which is axially supported against the end module.
- a fastening bolt in the form of a threaded bolt is provided, which is screwed into a threaded hole in the base body and carries a nut on the side facing away from the base body, which is axially supported against the end module.
- the threaded bolt can also be firmly connected to the base body, for example in a materially bonded manner.
- the bolt regardless of its design, can push through the fastening openings in a direction transverse to the transverse axis.
- figure 1 shows a perspective view of an application device with a base body 1, which extends in the direction of a transverse axis Q.
- a plurality of application heads 2 are arranged in a row next to one another along the transverse axis Q on the base body 1 and are fastened to the base body 1 .
- the individual application heads 2 with viscous medium, especially hot melt adhesive, provided.
- supply channels (not shown) are arranged in the base body 1 .
- the application heads 2 are supplied with compressed air via the base body 1 in order to actuate them.
- a compressed air supply 3 is connected to the base body 1 , with compressed air channels (not shown) in the base body 1 connecting the compressed air supply 3 to the application heads 2 .
- An end module 4 , 5 is fastened to the base body 1 at the ends of the row of application heads 2 .
- the end modules 4, 5 are "dummy modules" that are not used to apply viscous medium. They serve exclusively to attach the guns to the ends of the row of guns 2, as will be explained in more detail below.
- the application device is arranged in such a way that, based on a vertical axis H, which runs perpendicular to the transverse axis Q, a carrier web 6 is moved under the application device in the direction of a transport direction T, with adhesive dots 7 and/or adhesive strips 8 passing through the Application heads 2 are applied to the carrier web 6.
- the transport direction T runs parallel to a longitudinal axis L, which is arranged perpendicularly to the transverse axis Q and to the vertical axis H.
- the figure 2 shows a front view of two application heads 2, 2 ', which are arranged directly next to each other.
- the figure 3 shows one of the two in figure 2 guns 2 shown in a side view.
- the two figures 2 and 3 are described together below. Representative of all application heads of the application device, which are all identical, the figure 2 Application head 2 shown on the left is described in more detail.
- the application head 2' shown on the right, which corresponds to the features of the application head 2 on the left, are provided with the same reference numbers, supplemented by an apostrophe.
- the application head 2 has a figure 2 first side surface arranged on the left and one in figure 2 on the right arranged second side surface 10, which are both arranged perpendicular to the transverse axis Q.
- Application head 2 shown on the left has its second side face 10 in contact with the first side face 9' of the one shown on the right application head 2'.
- 2' according to figure 1 are each a first side surface of an application head in contact with a second side surface of another adjacent application head.
- the application head 2 has a groove-shaped first recess 11 in the first side face 9 .
- a groove-shaped second recess 12 is arranged in the second side surface 10 .
- the recesses 11, 12 are semi-cylindrical and extend parallel to the longitudinal axis L of the application device, i.e. transversely to the transverse axis Q.
- the recesses 11, 12 can also have a different cross-sectional shape, such as a segment of a circle or rectangular, as long as they are open to the immediately adjacent applicator head 2, 2'.
- a bolt in the form of a screw 14 sits in the fastening opening 13 .
- the screw 14 has a screw head 16 which is clamped axially against the base body 1 facing away from clamping surfaces 18 of the two application heads 2 forming the fastening opening 13. Due to this bracing, a fastening surface 19 of the two applicator heads 2 forming the fastening opening 13 is braced against the base body 1 in contact. This serves in particular for the temperature transition between the heated base body 1 and a housing of the application head 2.
- end modules 4, 5 are arranged at the ends of the row of application heads, which have a facing recess corresponding to the respectively adjacent application head to this, in order to form a fastening opening together with the recess of the application head.
- the end modules 4, 5 are also firmly connected to the base body 1 by means of fastenings, which are not shown here.
- FIG 4 shows a longitudinal section of the application head according to figure 3 .
- the application head comprises a housing 20 in which a piston-cylinder unit is arranged.
- the piston-cylinder unit has a cylinder represented by a cylinder bore 21 within the housing 20 .
- the term "cylinder bore” does not mean that it has to be a bore in the form of a circular cylinder with a circular cross-section.
- the cylinder bore 21 can also have a cross section that is elongate, with the cylinder bore 21 having a greater extent, for example, in the direction of a longitudinal axis L than in the direction of a transverse axis Q, with the longitudinal axis L and the transverse axis Q being perpendicular in the exemplary embodiment shown are arranged to each other and perpendicular to the vertical axis H.
- the cylinder bore 21 starts at an upper side of the housing 20 and extends into the depth of the housing 20 in the direction of a vertical axis H.
- the piston-cylinder unit is used to actuate a nozzle needle 22 which is axially adjustable along the vertical axis H within the housing 20 .
- An outlet nozzle 23 for the viscous medium, here for a hot-melt adhesive, is also provided on the housing 20 .
- the nozzle needle 22 serves to open and close the outlet nozzle 23 .
- the piston-cylinder unit represents an actuating device for the nozzle needle 22.
- the piston-cylinder unit also includes a piston 24, which is adapted to the inner contour of the cylinder bore 21 and is guided in the cylinder bore 21 so as to be axially adjustable along the vertical axis H.
- Two sealing rings 25, 26 are used between the piston 24 and the inner surface of the cylinder bore 21 to seal the piston 24 from the cylinder bore 21.
- the piston 24 has an upper piston surface 27 and a lower piston surface 28, each of which can be acted upon by compressed air force.
- the piston-cylinder unit is consequently designed as a pneumatic actuating cylinder. In principle, however, it is also conceivable that it is a hydraulic actuating cylinder.
- An air inlet 29 is used to open and an air inlet 30 to close the outlet nozzle 23 for pressurizing the piston surfaces 27, 28, the air inlet 29 for opening being connected to a first cylinder chamber 31 for pressurizing the lower piston surface 27.
- the closing air inlet 30 is connected to a second cylinder chamber 32 which serves to pressurize the upper piston surface 27 .
- the cylinder bore 21 is in figure 4 shown orientation of the housing 20 is closed at the top by a cover 33, which is sealed by means of sealing rings 34 in the cylinder bore 21 and is fixed to the housing 20 by fastening screws (not shown).
- a spring element 35 is arranged in the cover 33 and is supported on the one hand against the cover 33 and on the other hand against the piston 24 and urges the piston 24 in the direction of a closed position for closing the outlet nozzle 23 . This ensures that the outlet nozzle 23 is closed even in the event of a pressure loss in the cylinder chambers 31, 32.
- the nozzle needle 22 is firmly connected to the piston 24 and is axially displaced by it.
- the nozzle needle 22 is guided through a needle channel 36 within the housing 20 and extends to the outlet nozzle 23 which is located on the side of the housing 20 facing away from the cover 33 .
- the needle channel 36 is followed by a nozzle chamber 37 through which the nozzle needle 22 is also passed.
- the nozzle chamber 37 is connected via a supply channel 38 to an inlet 39 for viscous medium, here hot-melt adhesive, and is supplied with hot-melt adhesive via this.
Landscapes
- Coating Apparatus (AREA)
Abstract
Auftragsvorrichtung zum Auftragen eines viskosen Mediums, insbesondere Heißschmelzkleber, auf ein Substrat, umfassend:einen Grundkörper (1),mehrere Auftragsköpfe (2, 2'), die entlang einer Querachse (Q) der Auftragsvorrichtung in Reihe nebeneinander angeordnet und an dem Grundkörper (1) befestigt sind, wobei die Auftragsköpfe (12, 12') jeweils zumindest eine Ausnehmung (11, 11', 12, 12') aufweisen, die gemeinsam mit einer Ausnehmung (11, 11', 12, 12') eines benachbarten Auftragskopfs (2, 2') einen Befestigungsdurchbruch (13) bildet, unddass die Auftragsvorrichtung ferner Befestigungsmittel umfasst, die jeweils einen Bolzen (14) aufweisen, der in einem der Befestigungsdurchbrüche (13) sitzt, am Grundkörper (1) befestigt ist und an einer vom Grundkörper (1) abgewandten Seite der Auftragsköpfe (2, 2') gegen beide, den jeweiligen Befestigungsdurchbruch (13) bildende Auftragsköpfe (2, 2') abgestützt ist.Application device for applying a viscous medium, in particular hot-melt adhesive, to a substrate, comprising:a base body (1),several application heads (2, 2'), which are arranged in a row next to one another along a transverse axis (Q) of the application device and are attached to the base body (1 ) are fixed, the application heads (12, 12') each having at least one recess (11, 11', 12, 12') which together with a recess (11, 11', 12, 12') of an adjacent application head ( 2, 2') forms a fastening opening (13), and that the application device further comprises fastening means, each having a bolt (14) which sits in one of the fastening openings (13), is fastened to the base body (1) and to one of the base body (1) the opposite side of the application heads (2, 2') is supported against both application heads (2, 2') forming the respective fastening aperture (13).
Description
Die Erfindung betrifft eine Auftragsvorrichtung zum Auftragen eines viskosen Mediums, insbesondere Heißschmelzkleber, auf ein Substrat, und umfasst einen Grundkörper sowie mehrere Auftragsköpfe, die entlang einer Querachse der Auftragsvorrichtung in Reihe nebeneinander angeordnet und an dem Grundkörper befestigt sind.The invention relates to an application device for applying a viscous medium, in particular hot-melt adhesive, to a substrate, and comprises a base body and several application heads, which are arranged in a row next to one another along a transverse axis of the application device and are attached to the base body.
Eine solche Auftragsvorrichtung ist zum Beispiel aus der
Die dort beschriebene Auftragsvorrichtung weist eine Vielzahl von Auftragsköpfen auf, die jeweils ein Gehäuse umfassen. Die Gehäuse weisen jeweils eine Düsenkammer mit einem Zuführkanal und einer Austrittsdüse für das viskose Medium auf. Ferner ist eine Düsennadel vorgesehen, die die Düsenkammer durchsetzt und deren Spitze auf einem Düsennadelsitz der Austrittsdüse aufsitzt, um diese zu verschließen. Mittels einer Betätigungseinrichtung kann die Düsennadel axial entlang einer Verstellachse verschoben werden, um die Austrittsdüse zu öffnen und zu schließen. Das Gehäuse weist hierbei eine Zylinderkammer auf, in der ein Kolben axial verschiebbar geführt ist. Diese Kolbenzylindereinheit ist als doppelt wirkender pneumatischer Stellzylinder ausgebildet und ist Teil der Betätigungseinrichtung zum Verstellen der Düsennadel. Das Gehäuse weist, quer zur Verstellachse, ein rechteckiges Außenprofil auf, so dass in einfacher Weise mehrere Auftragsköpfe nebeneinander angeordnet werden können, wobei die Auftragsköpfe mit Seitenflächen der Gehäuse aneinander anliegen können.The application device described there has a large number of application heads, each of which includes a housing. The housings each have a nozzle chamber with a feed channel and an outlet nozzle for the viscous medium. Furthermore, a nozzle needle is provided, which passes through the nozzle chamber and the tip of which rests on a nozzle needle seat of the outlet nozzle in order to close it. The nozzle needle can be displaced axially along an adjustment axis by means of an actuating device in order to open and close the outlet nozzle. In this case, the housing has a cylinder chamber in which a piston is guided in an axially displaceable manner. This piston-cylinder unit is designed as a double-acting pneumatic actuating cylinder and is part of the actuating device for adjusting the nozzle needle. The housing has a rectangular outer profile transversely to the adjustment axis, so that a plurality of application heads can be arranged next to one another in a simple manner, it being possible for the application heads to bear against one another with the side surfaces of the housing.
Zur Befestigung der einzelnen Auftragsköpfe sind jeweils zwei Schrauben vorgesehen, die in Richtung der Querachse beidseitig der Zylinderkammer durch Befestigungsdurchbrüche im Gehäuse geführt sind und in Gewindebohrungen des Grundkörpers eingeschraubt sind. Die Schrauben sind auf einer vom Grundkörper abgewandten Seite mit einem Schraubenkopf gegen das Gehäuse abgestützt, um dieses gegen den Grundkörper zu verspannen.Two screws are provided to fasten the individual application heads, which are guided in the direction of the transverse axis on both sides of the cylinder chamber through fastening openings in the housing and are screwed into threaded holes in the base body. The screws are supported on a side facing away from the base body with a screw head against the housing in order to clamp it against the base body.
Der Abstand der Auftragsdüsen der einzelnen Auftragsköpfe zueinander ist einerseits durch die Breite des Kolbens bzw. der Breite der Zylinderkammer in Richtung der Querachse bestimmt. Zum anderen ist der Abstand der Auftragsdüsen durch die Dicke der Schrauben bzw. der Schraubenköpfe zum Befestigung der Auftragsköpfe bestimmt.The distance between the application nozzles of the individual application heads is determined on the one hand by the width of the piston or the width of the cylinder chamber in the direction of the transverse axis. On the other hand, the distance between the application nozzles is determined by the thickness of the screws or the screw heads for fastening the application heads.
Die Größen der wirksamen Kolbenflächen des Kolbens und damit die Breite der Zylinderkammern sind konstruktiv an die geforderten Kräfte zum Verschließen der Austrittsdüse mittels der Düsennadel vorgegeben. Insbesondere beim intermittierenden Auftragen von Punkten des viskosen Mediums in kurzen zeitlichen Abständen muss die Düsennadel schnell bewegt werden, wodurch große Betätigungskräfte erforderlich werden. Dies erfordert große Kolbenflächen, was bei kreisrunden Kolbenflächen dazu führt, dass die Abstände der Auftragsköpfe zueinander und somit die Abstände der damit auftragbaren Punkte in Richtung der Querachse verhältnismäßig groß sind. In der
Aufgabe der vorliegenden Erfindung ist es, eine Auftragsvorrichtung bereitzustellen, bei der der Abstand nebeneinander angeordneter Austrittsdüsen von Auftragsköpfen in einfacher Weise reduziert werden kann.The object of the present invention is to provide an application device in which the distance between outlet nozzles of application heads arranged next to one another can be reduced in a simple manner.
Die Aufgabe wird durch eine Auftragsvorrichtung zum Auftragen eines viskosen Mediums, insbesondere Heißschmelzkleber, auf ein Substrat, gelöst, die einen Grundkörper sowie mehrere Auftragsköpfe, die entlang einer Querachse der Auftragsvorrichtung in Reihe nebeneinander angeordnet und an dem Grundkörper befestigt sind, umfasst. Die Auftragsköpfe weisen jeweils zumindest eine Ausnehmung auf, die gemeinsam mit einer Ausnehmung eines benachbarten Auftragskopfs einen Befestigungsdurchbruch bildet. Ferner sitzt in den Befestigungsdurchbrüche jeweils ein Bolzen, der am Grundkörper befestigt ist und an einer vom Grundkörper abgewandten Seite der Auftragsköpfe gegen beide, den jeweiligen Befestigungsdurchbruch bildende Auftragsköpfe abgestützt ist.The object is achieved by an application device for applying a viscous medium, in particular hot-melt adhesive, to a substrate, which comprises a base body and a plurality of application heads, which are arranged in a row next to one another along a transverse axis of the application device and are attached to the base body. The application heads each have at least one recess which, together with a recess in an adjacent application head, forms a fastening opening. Furthermore, a bolt is seated in each of the fastening apertures, which is fastened to the base body and is supported on a side of the application heads facing away from the base body against both application heads forming the respective fastening aperture.
Durch diese Anordnung sind an den einander zugewandten Seiten zweier benachbarter Auftragsköpfe nicht zwei Befestigungsmittel, sondern lediglich ein Befestigungsmittel erforderlich. Hierdurch lässt sich die Breite der Auftragsköpfe in Richtung der Querachse gegenüber den bekannten Auftragsköpfen aus dem Stand der Technik reduzieren. Somit lässt sich letztendlich auch der Abstand zwischen den Aufträgen des viskosen Mediums auf dem Substrat reduzieren.As a result of this arrangement, only one fastening means, rather than two fastening means, is required on the mutually facing sides of two adjacent application heads. As a result, the width of the application heads in the direction of the transverse axis can be reduced compared to the known application heads from the prior art. In this way, the distance between the applications of the viscous medium on the substrate can ultimately be reduced.
Zumindest einer der Bolzen kann als Schraube ausgebildet sein, die in eine Gewindebohrung des Grundkörpers eingeschraubt ist und einen Schraubenkopf aufweist, mit dem die Schraube auf einer vom Grundkörper abgewandten Seite der Auftragsköpfe gegen diese abgestützt ist. Jede Schraube ist somit mit dem Schraubenkopf gegen die beiden Auftragsköpfe axial abgestützt, die zusammen den Befestigungsdurchbruch, in dem die Schraube sitzt, bilden.At least one of the bolts can be designed as a screw which is screwed into a threaded hole in the base body and has a screw head with which the screw is supported against the application heads on a side facing away from the base body. Each screw is thus axially supported with the screw head against the two applicator heads, which together form the fastening opening in which the screw sits.
Alternativ ist auch denkbar, dass es sich bei dem Bolzen um einen Gewindebolzen handelt, der in eine Gewindebohrung des Grundkörpers eingeschraubt ist und auf der vom Grundkörper abgewandten Seite eine Mutter trägt, die gegen die Auftragsköpfe axial abgestützt ist. Das heißt, dass kein Schraubenkopf vorgesehen ist, sondern eine Schraubenmutter, die auf den Gewindebolzen aufgeschraubt ist. Der Gewindebolzen kann auch fest, zum Beispiel stoffschlüssig durch Schweißen, Löten, Kleben oder ähnliches, mit dem Grundkörper verbunden sein.Alternatively, it is also conceivable that the bolt is a threaded bolt which is screwed into a threaded hole in the base body and carries a nut on the side facing away from the base body, which is supported axially against the applicator heads. This means that no screw head is provided, but a nut that is screwed onto the threaded bolt. The threaded bolt can also be firmly connected to the base body, for example with a material fit by welding, soldering, gluing or the like.
Die Ausnehmungen können jeweils in eine Seitenfläche des Gehäuses der Auftragsköpfe ausgebildet sein.The recesses can each be formed in a side surface of the housing of the application heads.
Jeweils zwei nebeneinander angeordnete Auftragsköpfe können einander zugewandten Seitenwänden aufweisen, die zudem in Kontakt zueinander sein können, wobei die Ausnehmungen in den einander zugewandten Seitenwänden angeordnet sind.Each two application heads arranged side by side can have mutually facing side walls, which can also be in contact with each other, the Recesses are arranged in the side walls facing one another.
Die Ausnehmungen können jeweils als Nut in einer der Seitenfläche eines der Auftragsköpfe ausgebildet sind, wobei die Nut zu einem benachbarten Auftragskopf hin offen ist. Die einander zugewandten Nuten benachbarter Auftragsköpfe bilden somit zusammen einen durchgehenden kanalartigen Durchbruch. Hierbei können die einzelnen Nuten im Querschnitt beliebig, zum Beispiel kreissegmentförmig, halbkreisförmig oder in Form eines Polygonzuges, wie etwa dreieckig oder rechteckig, ausgestaltet sein.The recesses can each be formed as a groove in one of the side surfaces of one of the application heads, with the groove being open towards an adjacent application head. The mutually facing grooves of adjacent application heads thus together form a continuous channel-like opening. The individual grooves can have any desired cross-section, for example in the form of a segment of a circle, a semi-circle or in the form of a polygon, such as triangular or rectangular.
Die Auftragsköpfe können jeweils zwei voneinander abgewandte Ausnehmungen aufweisen, sodass diese jeweils mit einer Ausnehmung eines benachbarten Auftragskopfs einen Befestigungsdurchbruch bilden. Somit können die Auftragsköpfe auf zwei Seiten schmaler ausgebildet werden.The application heads can each have two recesses facing away from one another, so that they each form a fastening opening with a recess of an adjacent application head. The application heads can thus be made narrower on two sides.
Die Befestigungsdurchbrüche können zylinderförmig gestaltet sein. In einer Ausgestaltung können hierfür die Ausnehmungen jeweils halbzylinderförmig gestaltet sein. Denkbar ist auch, dass die Ausnehmungen im Querschnitt die Form eines Kreissegments, abweichend von einem Halbkreis, aufweisen, wobei diejenigen Ausnehmungen, die gemeinsam einen Befestigungsdurchbruch bilden, jeweils im Querschnitt derart ausgebildet sind, dass die kreissegmentförmigen Querschnitte zusammen einen Kreisquerschnitt bilden.The fastening openings can be designed in a cylindrical manner. In one embodiment, the recesses can each be designed in the shape of a semi-cylinder for this purpose. It is also conceivable that the cross-section of the recesses has the shape of a segment of a circle, other than a semicircle, with those recesses that together form a fastening aperture being configured in cross-section in such a way that the cross-sections in the shape of a segment of a circle together form a circular cross-section.
Die Auftragsköpfe können jeweils eine Befestigungsfläche aufweisen, mit der die Auftragsköpfe in Anlage zum Grundkörper gehalten sind. Der Grundkörper kann beheizt sein, sodass durch den Kontakt zwischen der Befestigungsfläche und dem Grundkörper eine Wärmeübergang vom Grundkörper auf den Auftragskopf gewährleistet wird.The application heads can each have a fastening surface with which the application heads are held in contact with the base body. The base body can be heated, so that the contact between the attachment surface and the base body ensures heat transfer from the base body to the application head.
Die Auftragsvorrichtung kann ferner Endmodule umfassen, die an den Enden der Reihe von Auftragsköpfen am Grundkörper befestigt sind.The application device can further comprise end modules which are attached to the base body at the ends of the row of application heads.
Hierbei können die Endmodule jeweils eine Ausnehmung aufweisen, die mit einer der Ausnehmungen des jeweils benachbarten Auftragskopfs einen Befestigungsdurchbruch bildet.In this case, the end modules can each have a recess which forms a fastening opening with one of the recesses of the respectively adjacent application head.
Die Endmodule können jeweils zusätzlich am Grundkörper befestig sein. Sie können zum Beispiel eine Befestigungsbohrung aufweisen, in der eine Befestigungsschraube sitzt, die in eine Gewindebohrung am Grundkörper eingeschraubt ist.The end modules can each also be attached to the base body. For example, they can have a mounting hole in which a mounting screw sits, which is screwed into a threaded hole on the base body.
Alternativ ist auch denkbar, dass anstelle der Befestigungsschraube ein Befestigungsbolzen in Form eines Gewindebolzens vorgesehen ist, der in eine Gewindebohrung des Grundkörpers eingeschraubt ist und auf der vom Grundkörper abgewandten Seite eine Mutter trägt, die gegen das Endmodul axial abgestützt ist. Das heißt, dass kein Schraubenkopf vorgesehen ist, sondern eine Schraubenmutter, die auf den Gewindebolzen aufgeschraubt ist. Der Gewindebolzen kann auch fest, zum Beispiel stoffschlüssig, mit dem Grundkörper verbunden sein.Alternatively, it is also conceivable that instead of the fastening screw, a fastening bolt in the form of a threaded bolt is provided, which is screwed into a threaded hole in the base body and carries a nut on the side facing away from the base body, which is axially supported against the end module. This means that no screw head is provided, but a nut that is screwed onto the threaded bolt. The threaded bolt can also be firmly connected to the base body, for example in a materially bonded manner.
Grundsätzlich kann der Bolzen, unabhängig von seiner Ausgestaltung, die Befestigungsdurchbrüche jeweils in einer Richtung quer zur Querachse durchsetzen.In principle, the bolt, regardless of its design, can push through the fastening openings in a direction transverse to the transverse axis.
Eine Ausführungsform einer Auftragsvorrichtung wird im Folgenden anhand der Zeichnungen näher erläutert. Hierin zeigt:
Figur 1- eine perspektivische Darstellung einer Auftragsvorrichtung mit einem Substrat in Form einer Trägerbahn, auf die viskoses Medium, z.B. Heißschmelzkleber aufgetragen wird,
Figur 2- eine Frontansicht zweier benachbarter Auftragsköpfe gemäß
,Figur 1 Figur 3- eine Seitenansicht eines der Auftragsköpfe gemäß
undFigur 2 - Figur 4
- einen Längsschnitt des Auftragskopfs gemäß
.Figur 3
- figure 1
- a perspective view of an application device with a substrate in the form of a carrier web to which viscous medium, e.g. hot-melt adhesive, is applied,
- figure 2
- according to a front view of two adjacent application heads
figure 1 , - figure 3
- a side view of one of the application heads according to FIG
figure 2 and - figure 4
- according to a longitudinal section of the applicator head
figure 3 .
An den Enden der Reihe von Auftragsköpfen 2 ist jeweils ein Endmodul 4, 5 an dem Grundkörper 1 befestigt. Die Endmodule 4, 5 sind "Blindmodule", die nicht zum Auftragen von viskosen Medium dienen. Sie dienen ausschließlich der Befestigung der Auftragsköpfe an den Enden der Reihe von Auftragsköpfen 2, wie nachfolgend noch näher erläutert wird.An
Die Auftragsvorrichtung ist derart angeordnet, dass bezogen auf eine Hochachse H, die senkrecht zur Querachse Q verläuft, unter der Auftragsvorrichtung eine Trägerbahn 6 in Richtung einer Transportrichtung T bewegt wird, wobei während des Bewegen der Trägerbahn 6 Klebepunkte 7 und/oder Klebestreifen 8 durch die Auftragsköpfe 2 auf die Trägerbahn 6 aufgetragen werden. Die Transportrichtung T verläuft parallel zu einer Längsachse L, die senkrecht zur Querachse Q und zur Hochachse H angeordnet ist.The application device is arranged in such a way that, based on a vertical axis H, which runs perpendicular to the transverse axis Q, a
Die
Der Auftragskopf 2 weist eine in
Der Auftragskopf 2 weist in der ersten Seitenfläche 9 eine nutförmige erste Ausnehmung 11 auf. In der zweiten Seitenfläche 10 ist eine nutförmige zweite Ausnehmung 12 angeordnet. Die Ausnehmungen 11, 12 sind in dem gezeigten Ausführungsbeispiel halbzylinderförmig gestaltet und erstrecken sich parallel zur Längsachse L der Auftragsvorrichtung, also quer zur Querachse Q. Alternative könnend die Ausnehmung 11, 12 auch eine andere Querschnittsform aufweisen, wie zum Beispiel kreissegmentförmig oder rechteckig, solange sie zum jeweils zum unmittelbar benachbarten Auftragskopf 2, 2' hin offen sind. Somit bilden, wie in
Wie in
Die Kolbenzylindereinheit dient zum Betätigen einer Düsennadel 22, die innerhalb des Gehäuses 20 entlang der Hochachse H axial verstellbar ist. An dem Gehäuse 20 ist ferner eine Austrittsdüse 23 für das viskose Medium, hier für einen Heißschmelzkleber, vorgesehen. Die Düsennadel 22 dient dazu, die Austrittsdüse 23 zu öffnen und zu schließen.The piston-cylinder unit is used to actuate a
Die Kolbenzylindereinheit stellt eine Betätigungseinrichtung für die Düsennadel 22 dar. Die Kolbenzylindereinheit umfasst ferner einen Kolben 24, der an die Innenkontur der Zylinderbohrung 21 angepasst ist und entlang der Hochachse H axial verstellbar in der Zylinderbohrung 21 geführt ist. Zwei Dichtringe 25, 26 dienen zwischen dem Kolben 24 und der Innenfläche der Zylinderbohrung 21 zum Abdichten des Kolbens 24 gegenüber der Zylinderbohrung 21. Der Kolben 24 weist eine obere Kolbenfläche 27 und eine untere Kolbenfläche 28 auf, die jeweils mit Druckluftkraft beaufschlagt werden können. Die Kolbenzylindereinheit ist folglich als pneumatischer Stellzylinder ausgebildet. Grundsätzlich ist jedoch auch denkbar, dass es sich um einen hydraulischen Stellzylinder handelt. Zur Druckbeaufschlagung der Kolbenflächen 27, 28 dient ein Lufteinlass 29 zum Öffnen und ein Lufteinlass 30 zum Schließen der Austrittsdüse 23, wobei der Lufteinlass 29 zum Öffnen mit einem ersten Zylinderraum 31 zum Beaufschlagen der unteren Kolbenfläche 27 verbunden ist. Der Lufteinlass 30 zum Schließen ist mit einem zweiten Zylinderraum 32 verbunden, der zum Druckbeaufschlagen der oberen Kolbenfläche 27 dient.The piston-cylinder unit represents an actuating device for the
Die Zylinderbohrung 21 ist in der in
Die Düsennadel 22 ist mit dem Kolben 24 fest verbunden und wird von diesem axial verschoben. Hierbei ist die Düsennadel 22 durch einen Nadelkanal 36 innerhalb des Gehäuses 20 geführt und reicht bis zur Austrittsdüse 23 welche sich auf der vom Deckel 33 abgewandten Seite des Gehäuses 20 befindet. An den Nadelkanal 36 schließt sich eine Düsenkammer 37 an, durch die die Düsennadel 22 ebenfalls hindurchgeführt ist. Die Düsenkammer 37 ist über einen Zuführkanal 38 mit einem Einlass 39 für viskoses Medium, hier Heißschmelzkleber, verbunden und wird hierüber mit Heißschmelzkleber versorgt. In einer Schließstellung des Kolbens 24 befindet sich eine Spitze 40 der Düsennadel 22, wie in
- 11
- Grundkörperbody
- 2,2'2.2'
- Auftragskopforder header
- 33
- Druckluftversorgungcompressed air supply
- 44
- Endmodulend module
- 55
- Endmodulend module
- 66
- Trägerbahncarrier track
- 77
- Klebepunktglue point
- 88th
- Klebestreifenadhesive strips
- 9, 9'9, 9'
- erste Seitenflächefirst face
- 10, 10'10, 10'
- zweite Seitenflächesecond side face
- 11, 11'11, 11'
- erste Ausnehmungfirst recess
- 12, 12'12, 12'
- zweite Ausnehmungsecond recess
- 1313
- Befestigungsdurchbruchmounting hole
- 1414
- Schraubescrew
- 1515
- Gewindeschaftthreaded shank
- 1616
- Schraubenkopfscrew head
- 1717
- Gewindebohrungthreaded hole
- 1818
- Spannflächeclamping surface
- 1919
- Befestigungsflächemounting surface
- 2020
- GehäuseHousing
- 2121
- Zylinderbohrungcylinder bore
- 2222
- Düsennadeljet needle
- 2323
- Austrittsdüseoutlet nozzle
- 2424
- KolbenPistons
- 2525
- Dichtringsealing ring
- 2626
- Dichtringsealing ring
- 2727
- obere Kolbenflächeupper piston surface
- 2828
- untere Kolbenflächelower piston surface
- 2929
- Lufteinlass zum ÖffnenAir inlet to open
- 3030
- Lufteinlass zum SchließenAir inlet to close
- 3131
- erster Zylinderraumfirst cylinder space
- 3232
- zweiter Zylinderraumsecond cylinder space
- 3333
- Deckellid
- 3434
- Dichtringsealing ring
- 3535
- Federelementspring element
- 3636
- Nadelkanalneedle channel
- 3737
- Düsenkammernozzle chamber
- 3838
- Zuführkanalfeed channel
- 3939
- Einlassinlet
- 4040
- SpitzeTop
- 4141
- Düsennadelsitznozzle needle seat
- 4242
- Austrittskanalexit channel
- LL
- Längsachselongitudinal axis
- HH
- Hochachsevertical axis
- Querachsetransverse axis
- TT
- Transportrichtungtransport direction
Claims (13)
dadurch gekennzeichnet,
dass zumindest einer der Bolzen als Schraube (14) ausgebildet ist, die in eine Gewindebohrung (17) des Grundkörpers (1) eingeschraubt ist und einen Schraubenkopf (16) aufweist, mit dem die Schraube (14) auf einer vom Grundkörper (1) abgewandten Seite der Auftragsköpfe (2, 2') gegen diese abgestützt ist.Application device according to claim 1,
characterized,
that at least one of the bolts is in the form of a screw (14) which is screwed into a threaded bore (17) in the base body (1) and has a screw head (16) with which the screw (14) is turned on a side facing away from the base body (1). Side of the application heads (2, 2 ') is supported against this.
dadurch gekennzeichnet,
dass die Ausnehmungen (11, 11', 12, 12') jeweils in eine Seitenfläche (9, 9', 10, 10') eines der Auftragsköpfe (2, 2') ausgebildet sind.Application device according to claim 1 or 2,
characterized,
that the recesses (11, 11', 12, 12') are each formed in a side surface (9, 9', 10, 10') of one of the application heads (2, 2').
dadurch gekennzeichnet,
dass jeweils zwei nebeneinander angeordnete Auftragsköpfe (2, 2') einander zugewandten Seitenflächen (9, 9', 10, 10') aufweisen, wobei die Ausnehmungen (11, 11', 12, 12') in den einander zugewandten Seitenflächen (9, 9', 10, 10') angeordnet sind.Application device according to one of claims 1 to 3,
characterized,
that in each case two application heads (2, 2') arranged next to one another have side surfaces (9, 9', 10, 10') facing one another, the recesses (11, 11', 12, 12') being in the side surfaces (9, 9', 10, 10') are arranged.
dadurch gekennzeichnet,
dass die Ausnehmungen (11, 11', 12, 12') jeweils als Nut in einer der Seitenfläche (9, 9', 10, 10') eines der Auftragsköpfe (2, 2') ausgebildet sind, wobei die Nut zu einem benachbarten Auftragskopf (2, 2') hin offen ist.Application device according to claim 3 or 4,
characterized,
that the recesses (11, 11', 12, 12') are each formed as a groove in one of the side surfaces (9, 9', 10, 10') of one of the application heads (2, 2'), the groove leading to an adjacent Application head (2, 2 ') is open towards.
dadurch gekennzeichnet,
dass die Auftragsköpfe (2, 2') jeweils zwei Ausnehmungen (11, 11', 12, 12') aufweisen, die voneinander abgewandt sind.Application device according to one of claims 1 to 5,
characterized,
that the application heads (2, 2') each have two recesses (11, 11', 12, 12') which face away from one another.
dadurch gekennzeichnet,
dass die Befestigungsdurchbrüche (13) zylinderförmig gestaltet sind.Application device according to one of claims 1 to 6,
characterized,
that the fastening openings (13) are cylindrical.
dadurch gekennzeichnet,
dass die Ausnehmungen (11, 11', 12, 12') halbzylinderförmig gestaltet sind.Application device according to one of claims 1 to 7,
characterized,
that the recesses (11, 11', 12, 12') are semi-cylindrical.
dadurch gekennzeichnet,
dass die Auftragsköpfe (2, 2') jeweils eine Befestigungsfläche (19) aufweisen, mit der die Auftragsköpfe (2, 2') in Anlage zum Grundkörper (1) gehalten sind.Application device according to one of Claims 1 to 8,
characterized,
that the application heads (2, 2') each have a fastening surface (19) with which the application heads (2, 2') are held in contact with the base body (1).
dadurch gekennzeichnet,
dass an den Enden der Reihe von Auftragsköpfen (2, 2') jeweils ein Endmodul (4, 5) am Grundkörper (1) befestigt ist.Application device according to one of claims 1 to 9,
characterized,
that at the ends of the row of application heads (2, 2') an end module (4, 5) is fastened to the base body (1).
dadurch gekennzeichnet,
dass die Endmodule (4, 5) jeweils eine Ausnehmung aufweisen, die mit einer der Ausnehmungen (11, 11', 12, 12') des jeweils benachbarten Auftragskopfs (2, 2') einen Befestigungsdurchbruch (13) bildet.Application device according to one of Claims 1 to 10,
characterized,
that the end modules (4, 5) each have a recess which forms a fastening aperture (13) with one of the recesses (11, 11', 12, 12') of the respective adjacent application head (2, 2').
dadurch gekennzeichnet,
dass die Endmodule (4, 5) jeweils eine Befestigungsbohrung aufweisen, in der eine Befestigungsschraube sitzt, die in eine Gewindebohrung am Grundkörper (1) eingeschraubt ist.Application device according to one of claims 1 to 11,
characterized,
that the end modules (4, 5) each have a fastening bore in which a fastening screw sits which is screwed into a threaded bore on the base body (1).
dadurch gekennzeichnet,
dass die Bolzen (14) die Befestigungsdurchbrüche (13) jeweils in einer Richtung quer zur Querachse (Q) durchsetzen.Application device according to one of Claims 1 to 12,
characterized,
that the bolts (14) pass through the fastening openings (13) in a direction transverse to the transverse axis (Q).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102021107264.6A DE102021107264A1 (en) | 2021-03-23 | 2021-03-23 | application device |
Publications (4)
Publication Number | Publication Date |
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EP4063026A2 true EP4063026A2 (en) | 2022-09-28 |
EP4063026A3 EP4063026A3 (en) | 2022-10-19 |
EP4063026C0 EP4063026C0 (en) | 2023-09-20 |
EP4063026B1 EP4063026B1 (en) | 2023-09-20 |
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ID=80623453
Family Applications (1)
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EP22159325.4A Active EP4063026B1 (en) | 2021-03-23 | 2022-03-01 | Application device |
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US (1) | US20220305518A1 (en) |
EP (1) | EP4063026B1 (en) |
DE (1) | DE102021107264A1 (en) |
ES (1) | ES2962138T3 (en) |
PL (1) | PL4063026T3 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013101637A1 (en) | 2013-02-19 | 2014-08-21 | Puffe Engineering Gmbh | Application head for viscous media, particularly hot melt adhesive, has outlet nozzle and piston cylinder unit, where piston surface has longitudinal extension in direction of longitudinal axis |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US5875922A (en) * | 1997-10-10 | 1999-03-02 | Nordson Corporation | Apparatus for dispensing an adhesive |
DE20020564U1 (en) | 2000-12-05 | 2001-05-03 | Nordson Corp Westlake | Device for dispensing fluids, in particular flowable adhesive |
ES2560555T3 (en) | 2006-01-06 | 2016-02-19 | Nordson Corporation | Liquid dispenser with individualized process air control |
US8061564B2 (en) * | 2006-11-15 | 2011-11-22 | Nordson Corporation | Liquid dispensing apparatus including an attachment member |
-
2021
- 2021-03-23 DE DE102021107264.6A patent/DE102021107264A1/en active Pending
-
2022
- 2022-03-01 ES ES22159325T patent/ES2962138T3/en active Active
- 2022-03-01 EP EP22159325.4A patent/EP4063026B1/en active Active
- 2022-03-01 PL PL22159325.4T patent/PL4063026T3/en unknown
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DE102013101637A1 (en) | 2013-02-19 | 2014-08-21 | Puffe Engineering Gmbh | Application head for viscous media, particularly hot melt adhesive, has outlet nozzle and piston cylinder unit, where piston surface has longitudinal extension in direction of longitudinal axis |
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ES2962138T3 (en) | 2024-03-15 |
EP4063026A3 (en) | 2022-10-19 |
EP4063026C0 (en) | 2023-09-20 |
DE102021107264A1 (en) | 2022-09-29 |
PL4063026T3 (en) | 2024-02-26 |
US20220305518A1 (en) | 2022-09-29 |
EP4063026B1 (en) | 2023-09-20 |
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